On a standard Temperature vs. Mole Composition phase diagram constructed at a constant external pres — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

For a minimum boiling azeotrope, the boiling point is lower than either pure component. On a T-X diagram, this appears as a minimum 'dip' or trough. At this precise point, the bubble point (liquid) curve and the dew point (vapour) curve pinch together, showing that the liquid and vapour compositions are mathematically identical.